strange error... any idea?

Miguel Koren O´ Brien de Lacy miguelk at KONSULTEX.COM.BR
Wed Feb 13 22:01:16 GMT 2002

Another thing you may want to look at is if your installation requires a
"reverse dns lookup" for accepting mails. I not sure though where in
sendmail this is configured :-(  Of course it could also be that a firewall
is in place and blocking that ip? Check your end and their end of it. Ask
them to do a "telnet your_ip 25" and see what comes up. Try this also to
their ip and see what you get.

A few months ago we had the type you describe when sending mails to
and it was because our old IP happened to be in a spam list in the uunet
block (not mailscanner related). The problem went away when we switched
netblocks in november.


"Rose, Bobby" wrote:

> Usually if it was blacklisted then it would be in the sendmail error
> message.  This sounds more like a personal sendmail blacklist entry in
> the /etc/mail/access file.
> -----Original Message-----
> From: Kelly Hamlin [mailto:fizz at BOMB.NET]
> Sent: Wednesday, February 13, 2002 3:35 PM
> Subject: strange error... any idea?
> Someone trying to sendmail to me is getting the following message and i
> wasnt sure if it was caused by relay or whatnot..
> SMTP error from remote mailer after MAIL FROM: info at : 550
> 5.7.1 Access denied
> Ive done some research and it all points to mail relaying, however ive
> check the server ( and it doesnt appear
> in any of the black lists on, or Anyone have
> any clues on what might be causing this? thanks, and im sorry i know its
> not a mailscanner problem most likely, but im desprate :)
>                   //////
>                 ( o o )
> +--.oooO--(_)--Oooo.-----------------+
> | [Kelly Hamlin]
> | kellyh at
> |
> |   .oooO
> |      (  )    Oooo.
> +--- \  (----(   )----------------------------+
>           \_)    ) /
>                 (_/

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